passwd_selinux(8)

1passwd_selinux(8)            SELinux Policy passwd           passwd_selinux(8)
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NAME

6       passwd_selinux  -  Security  Enhanced  Linux Policy for the passwd pro‐
7       cesses
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DESCRIPTION

10       Security-Enhanced Linux  secures  the  passwd  processes  via  flexible
11       mandatory access control.
12
13       The  passwd  processes  execute with the passwd_t SELinux type. You can
14       check if you have these processes running by executing the  ps  command
15       with the -Z qualifier.
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17       For example:
18
19       ps -eZ | grep passwd_t
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ENTRYPOINTS

24       The  passwd_t  SELinux  type  can be entered via the passwd_exec_t file
25       type.
26
27       The default entrypoint paths for the passwd_t domain are the following:
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29       /usr/bin/chage, /usr/bin/passwd, /usr/sbin/chpasswd
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PROCESS TYPES

32       SELinux defines process types (domains) for each process running on the
33       system
34
35       You can see the context of a process using the -Z option to ps
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37       Policy  governs  the  access confined processes have to files.  SELinux
38       passwd policy is very flexible allowing users  to  setup  their  passwd
39       processes in as secure a method as possible.
40
41       The following process types are defined for passwd:
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43       passwd_t
44
45       Note:  semanage  permissive -a passwd_t can be used to make the process
46       type passwd_t permissive. SELinux does not deny  access  to  permissive
47       process  types, but the AVC (SELinux denials) messages are still gener‐
48       ated.
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BOOLEANS

52       SELinux policy is customizable based on least access required.   passwd
53       policy is extremely flexible and has several booleans that allow you to
54       manipulate the policy and run passwd with the tightest access possible.
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58       If you want to allow users to resolve user passwd entries directly from
59       ldap  rather  then  using  a  sssd server, you must turn on the authlo‐
60       gin_nsswitch_use_ldap boolean. Disabled by default.
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62       setsebool -P authlogin_nsswitch_use_ldap 1
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66       If you want to allow all domains to execute in fips_mode, you must turn
67       on the fips_mode boolean. Enabled by default.
68
69       setsebool -P fips_mode 1
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73       If  you  want  to allow confined applications to run with kerberos, you
74       must turn on the kerberos_enabled boolean. Enabled by default.
75
76       setsebool -P kerberos_enabled 1
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80       If you want to allow system to run with  NIS,  you  must  turn  on  the
81       nis_enabled boolean. Disabled by default.
82
83       setsebool -P nis_enabled 1
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86
87       If  you  want to allow confined applications to use nscd shared memory,
88       you must turn on the nscd_use_shm boolean. Enabled by default.
89
90       setsebool -P nscd_use_shm 1
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94       If you want to allow samba to act as the domain controller, add  users,
95       groups  and  change  passwords,  you must turn on the samba_domain_con‐
96       troller boolean. Disabled by default.
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98       setsebool -P samba_domain_controller 1
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MANAGED FILES

103       The SELinux process type passwd_t can manage  files  labeled  with  the
104       following file types.  The paths listed are the default paths for these
105       file types.  Note the processes UID still need to have DAC permissions.
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107       faillog_t
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109            /var/log/btmp.*
110            /var/log/faillog.*
111            /var/log/tallylog.*
112            /var/run/faillock(/.*)?
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114       krb5_host_rcache_t
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116            /var/cache/krb5rcache(/.*)?
117            /var/tmp/nfs_0
118            /var/tmp/DNS_25
119            /var/tmp/host_0
120            /var/tmp/imap_0
121            /var/tmp/HTTP_23
122            /var/tmp/HTTP_48
123            /var/tmp/ldap_55
124            /var/tmp/ldap_487
125            /var/tmp/ldapmap1_0
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127       lastlog_t
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129            /var/log/lastlog.*
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131       passwd_file_t
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133            /etc/group[-+]?
134            /etc/passwd[-+]?
135            /etc/passwd.adjunct.*
136            /etc/ptmptmp
137            /etc/.pwd.lock
138            /etc/group.lock
139            /etc/passwd.OLD
140            /etc/passwd.lock
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142       security_t
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144            /selinux
145
146       shadow_t
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148            /etc/shadow.*
149            /etc/gshadow.*
150            /etc/nshadow.*
151            /var/db/shadow.*
152            /etc/security/opasswd
153            /etc/security/opasswd.old
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155       sssd_public_t
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157            /var/lib/sss/mc(/.*)?
158            /var/lib/sss/pubconf(/.*)?
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160       sssd_var_lib_t
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162            /var/lib/sss(/.*)?
163
164       user_tmp_t
165
166            /dev/shm/mono.*
167            /var/run/user(/.*)?
168            /tmp/.ICE-unix(/.*)?
169            /tmp/.X11-unix(/.*)?
170            /dev/shm/pulse-shm.*
171            /tmp/.X0-lock
172            /tmp/hsperfdata_root
173            /var/tmp/hsperfdata_root
174            /home/[^/]+/tmp
175            /home/[^/]+/.tmp
176            /tmp/gconfd-[^/]+
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FILE CONTEXTS

180       SELinux requires files to have an extended attribute to define the file
181       type.
182
183       You can see the context of a file using the -Z option to ls
184
185       Policy  governs  the  access  confined  processes  have to these files.
186       SELinux passwd policy is very flexible allowing users  to  setup  their
187       passwd processes in as secure a method as possible.
188
189       STANDARD FILE CONTEXT
190
191       SELinux defines the file context types for the passwd, if you wanted to
192       store files with these types in a diffent paths, you  need  to  execute
193       the  semanage  command  to  sepecify  alternate  labeling  and then use
194       restorecon to put the labels on disk.
195
196       semanage fcontext -a -t passwd_file_t '/srv/mypasswd_content(/.*)?'
197       restorecon -R -v /srv/mypasswd_content
198
199       Note: SELinux often uses regular expressions  to  specify  labels  that
200       match multiple files.
201
202       The following file types are defined for passwd:
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206       passwd_exec_t
207
208       -  Set  files with the passwd_exec_t type, if you want to transition an
209       executable to the passwd_t domain.
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211
212       Paths:
213            /usr/bin/chage, /usr/bin/passwd, /usr/sbin/chpasswd
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215
216       passwd_file_t
217
218       - Set files with the passwd_file_t type, if you want to treat the files
219       as passwd content.
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221
222       Paths:
223            /etc/group[-+]?,      /etc/passwd[-+]?,     /etc/passwd.adjunct.*,
224            /etc/ptmptmp,  /etc/.pwd.lock,  /etc/group.lock,  /etc/passwd.OLD,
225            /etc/passwd.lock
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227
228       Note:  File context can be temporarily modified with the chcon command.
229       If you want to permanently change the file context you need to use  the
230       semanage fcontext command.  This will modify the SELinux labeling data‐
231       base.  You will need to use restorecon to apply the labels.
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COMMANDS

235       semanage fcontext can also be used to manipulate default  file  context
236       mappings.
237
238       semanage  permissive  can  also  be used to manipulate whether or not a
239       process type is permissive.
240
241       semanage module can also be used to enable/disable/install/remove  pol‐
242       icy modules.
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244       semanage boolean can also be used to manipulate the booleans
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246
247       system-config-selinux is a GUI tool available to customize SELinux pol‐
248       icy settings.
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AUTHOR

252       This manual page was auto-generated using sepolicy manpage .
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